摘要
采用溶剂挥发法制备了不同比例的聚乳酸(PLA)改性聚(3-羟基丁酸酯-co-4-羟基丁酸酯)[P(3HB-co-4HB)]共混材料。通过对共混物拉伸性能以及其在土壤及模拟体液中的质量损失率、表面形貌的测定,研究了其降解行为,并同纯P(3HB-co-4HB)做了对比。结果表明:随着PLA含量的提高,共混膜的拉伸强度及拉伸模量均有提高,但提高幅度不大;共混膜的降解能力显著提高,在土壤中降解90 d质量损失率可达98.2%,模拟体液中降解失重小于土壤降解,为60.60%。
Different ratio of polylactic acid （PLA） and poly （3-hydroxybutyrate-co-4-hydroxybutyrate） [ P （3HB-co- 4HB） ] blends were prepared by the solvent evaporation method. The tensile properties of the blends and their degradation properties, such as weight loss and surface topography in the soil and the simulated body fluid were studied. The results showed that with the increase of PLA content,the tensile strength and tensile modulus of the film were improved,but only slightly; The degradation ability of the blends were significantly increased, and the mass loss were 98.2% in soil and 60.60% in simulated body fluid respectively.
出处
《塑料》
CAS
CSCD
北大核心
2014年第6期59-61,共3页
Plastics
基金
大连民族学院大学生创新训练项目(X2013040)
